JP2629040B2 - Japanese processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Overview] Regarding a Japanese processing system in which half-width characters and full-width characters are mixed, a Japanese-language processing system that can easily identify half-width characters and full-width characters without using a control code is provided. A Japanese processing system having a conversion processing unit, wherein the conversion processing unit has a code generation unit and a character processing unit, and the code generation unit is a JIS half-width character code represented by 1 byte from the input device. And a signal containing both JIS full-width character codes represented by 2-byte codes are input.
Generates a code with a bit structure in which the numerical value represented by the 8 bits of the code is equal to or less than a predetermined value, and the numerical value represented by the 8 bits of the high-order byte from the 2-byte double-byte character code A full-width character code with a bit configuration that takes a large value is generated. The character processing unit inputs the output signal of the code generation unit, determines the numerical value represented by one byte of the character code, and if the value is less than a predetermined numerical value, the byte Is identified as a half-width character, and when it is larger than a predetermined numerical value, two bytes obtained by combining the byte and the following one byte are identified as a full-width character.

[Industrial Application Field] The present invention relates to a Japanese processing system in which half-width characters and full-width characters are mixed.

In recent years, in information processing systems such as office management systems that perform salary management and inventory management, and Japanese document creation systems, half-width characters that represent alphabets, numbers, and kana characters and full-width characters that represent kanji, figures, and symbols are mixed. Normally, it is important to determine how easily half-width and full-width characters of mixed-width and full-width characters can be identified in determining the overall configuration, processing performance, and internal data volume of Japanese language processing. Elements.

[Prior Art] A conventional technique will be described with reference to FIGS. 6 to 9. Sixth
FIG. 7 shows a conventional code system defined by JIS (Japanese Industrial Standards), FIG. 7 shows a half-width character code system diagram, FIG. 8 shows another conventional code system, and FIG. FIG. 4 is a diagram showing characters and character strings using control codes.

Conventionally, JIS8 unit code system is used to represent half-width characters such as alphabets, numbers, and kana characters, and two characters represent two-byte characters such as kanji, symbols, and figures.
The JIS6226 code system of bytes (1 byte = 8 bits) is used.

In Fig. 6, the upper byte (8 bits) is displayed in the vertical axis direction with a scale expressed by a hexadecimal (4 bits) 2-digit number, and the lower byte (8 bits) is also a 2-digit hexadecimal number It is displayed in the horizontal axis direction by the scale expressed by
For the two-byte character used by the S6226 code system, both the upper byte (first byte) and the lower byte (second byte) use the codes of the hexadecimal 21 to 7E area. This area is indicated as (2121 to 7E7E) ₁₆ .

On the other hand, half-width characters (alphabet, numbers,
Kana characters have an 8-bit code, so JIS6
Since it cannot be displayed as a plane like the 226 code system, if it is expressed on a straight line parallel to the vertical axis of the upper byte (8 bits), it is displayed as shown on the right end of FIG. In other words, if 8 bits are represented by two hexadecimal digits, 00 to 7F is half-width,
Represents alphanumeric characters, A0 to DF represent half-width kana characters. Of the 00 to 7F, the range of alphabetic symbols usually used in paperwork is (20) ₁₆ to (7F) ₁₆ .

FIG. 7 shows this JIS8 unit code on a hexadecimal scale on the vertical axis representing the upper 4 bits and a hexadecimal scale on the horizontal axis representing the lower 4 bits, from (20) ₁₆ to (7F ) ₁₆ and (A0) ₁₆ to (DF) ₁₆ are used.

According to the contents, since the upper byte and the half-width character of the full-width character clearly use the same code and overlap, the half-width character and the full-width character cannot be distinguished depending on this code system.

Therefore, a code system that avoids duplication with half-width character codes by adding a constant to full-width character codes (shift
JIS) is considered. As shown in FIG. 6, the codes of the areas (81 to 9F and E0 to FC) not used in the 8-unit code system are assigned to the codes as the upper byte code.

However, this method allows the representation of JIS first-level and second-level kanji and JIS non-kanji (total 6802 characters), but cannot express any more character types.

FIG. 8 shows another conventional code system modified from the JIS6226 code system.

In this system, a fixed number (80 in hexadecimal) is added to each of the upper byte and the lower byte of the JIS6226 code to use an area (A1A1 to FEFE) ₁₆ and an extended character area for allocating a large number of kanji (Including a character area defined and used by the user), and (41A1 to A0FE) ₁₆ is used as an extended area as shown in the figure. As for the half-width character area, half-width characters and alphanumeric characters are represented by 00 to 7F and half-width kana characters are represented by A0 to DF as in the JIS8 unit.

However, even with this other conventional method, the code of the half-byte character in JIS8 unit and the code of the first byte of the full-width character remain the same.

For this reason, in the case of the JIS6226 code system or when using characters of character types specified in Shift JIS, at the start and end of the full-width character string, add a control code that does not overlap with the half-width character code, and Conventionally, a method for distinguishing full-width characters has been adopted.

FIG. 9 is an explanatory diagram of the code lengths of characters and character strings when the control codes are used. In the figure, a half-width character "A" is represented by 1 byte, and a full-width character "Hanako" is represented by 2 bytes. A full-width start control code (CS) and a full-width end control code (CE) of 1 byte are added before and after. Added, total 6
It becomes bytes. If a character string that is a mixture of half-width characters (5 characters) and full-width characters (3 characters) called "AB Ai 12a" is used as a sentence example, a number of control codes CS and CE are used, so a total of 15 bytes Become.

[Problems to be Solved by the Invention] As described above, when half-width characters and full-width characters coexist, conventionally, an extra control code is added to distinguish between half-width and full-width characters. In addition to this, there is a problem that not only an extra processing time is required but also an increase in the number of control codes leads to an increase in the amount of data, thereby deteriorating the system performance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a Japanese processing system that can easily identify half-width characters and full-width characters without using a control code.

[Means for Solving the Problems] FIG. 1 shows a basic configuration diagram according to the present invention, and FIG. 2 shows a principle explanatory diagram of the present invention.

In FIG. 1, reference numeral 31 denotes a conversion processing unit for converting an input JIS code into a code according to the present invention; 10, a code generation unit;
Denotes a character processing unit, and 12 denotes a character identification unit.

The principle explanatory diagram of FIG. 2 shows a character code area and a code expression used in the half-width / full-width character identification system of the present invention, and FIG. 2 will be described below.

As shown in Fig. 2A, a fixed numerical value is added to the character code used in the JIS6226 code system,
Bytes) and the horizontal axis (second byte) use hexadecimal numbers A0 to FE (AOAO to FEFE). A _16-character code is used, and a number of other kanji characters and user-defined character areas are used vertically. An area (A041 to FE9F) ₁₆ enclosed by hexadecimal numbers A0 to FE on the axis and hexadecimal numbers 41 to 9F on the horizontal axis is used. As described above, the full-width characters are obtained by changing the code system of another conventional system shown in FIG.

On the other hand, for half-width alphanumeric characters and kana characters assigned by JIS8 unit code, if the 8-bit code is represented by a 2-digit hexadecimal number, a code in the range of 00 to 9F is used.
This is the range shown by adding an arrow to the straight line shown at the right end of FIG. 2A. This half-width character code consists of a combination of the conventional character code in the range of alphanumeric symbols shown in Fig. 8 minus (20) ₁₆ , and the kana character code minus (40) _16. The 8-bit code is stored in the upper digit (4 bits) and the lower digit (4 bits) in B of FIG.
Is represented by the following coordinates.

As can be seen from FIG. 2, in the coding system used in the present invention, the half-width character has a character code value of 1 byte (8 bits) in the range of 00 to 9F (hexadecimal), and the full-width character is The value of the code of the upper byte of the 2-byte character code is in the range of A0 to FE.

The full-width character area of the JIS6226 code system shown in FIG. 2A is the same as the area of the conventional code system of another system shown in FIG. 8, and the area shown in FIG. 8 (A041 to FE9F) ₁₆
However, the number of character types accommodated in the area is the same. Therefore, the extended area (41
A0～9FFE) 2 bytes of the high byte of the character code assigned to _16, by reversing the order of the lower byte is converted region shown in FIG. 2 A. (A041~FE9F) into ₁₆ code.

According to the present invention, a half-width character or a full-width character is identified by a leading one-byte code, and the half-width character or the full-width character is processed according to the identification result.

[Operation] In FIG. 1, a code input from an input device or a code according to the JIS standard is output by a code generator 10.
The code of the present invention shown in FIG. 2A is generated. in this case,
A code input from an input device conforming to the JIS standard is shifted by adding a predetermined numerical value, and the same addition or subtraction is performed on an 8-unit code. The characters generated from the code generator 10 are in the other code format shown as A and B at the top of FIG. 1, and the code of the first byte (the single-byte character is only 1 byte) is the numerical value shown in FIG. Assigned to a range.

In this way, a code according to the code system shown in FIG. 2A is input to the character processing unit 11, and various kinds of specified processing, deletion, insertion, and the like are performed.

The character processing unit 11 includes a character identification unit 12. The code input from the code generation unit is stored in a 2-byte code holding unit 121.
Determined by 22. For the discrimination, a one-byte code is treated as an 8-bit numerical value, and a predetermined value (hexadecimal “A” in FIG. 2A)
0 "), if it is less than A0, it is identified as a half-width character code, one byte is taken out, and character processing is performed. Otherwise (A0 or more), it is identified as a full-width character, and it is identified as a full-width character. (The one byte following the upper byte of the identified byte is taken as the lower byte) and character processing is performed.

The result processed by the code according to the present invention is stored in a storage device (not shown) as it is,
When outputting to a standard output device, a conventional input / output device can be used by converting it to the original code.

As described above, since the present invention always represents half-width characters by 1 byte and full-width characters by 2 bytes, the character length at the time of display or printing does not coincide with the actual data length, so that processing is simplified, Since no control code is used, resources for storing and processing data can be saved.

When it is known that a code of another conventional method shown in FIG. 8 is input, and when it is determined that the code is a code of a full-width character in the extended area, the second part is used.
By replacing the upper and lower bytes of the byte code, it can be converted to the code of the present invention.
S standard area (A1A1 to FEFE) In the case of ₁₆ double-byte characters, the code is directly used as the code of the present invention.

Embodiment FIG. 3 is a block diagram of an embodiment of the present invention, FIG. 4 is a flowchart of character processing, and FIG. 5 is a diagram showing a difference between the present invention and a conventional example.

FIG. 3 shows an embodiment of a Japanese language processing system using a code system according to the present invention.

In the figure, 30 is an input device such as a keyboard for inputting a JIS standard character string, 31 is a conversion processing unit for converting the input JIS standard code into a code according to the present invention (hereinafter referred to as the present system code), 32 is A storage device for storing a codeta converted into a code, 33 is a data editing unit (corresponding to the character processing unit in FIG. 1) for editing such as insertion and deletion into a character string of the code of the system, and 34 is a code for the system. A restoration processing unit for restoring the JIS standard code from the JIS standard code, a display device 35 for displaying a JIS standard character example, and a printing device 36 for printing a JIS standard character string.

The JIS standard character string input by the input device 30 is converted by the conversion processing unit 31 into the present system code. The data editing unit 33 performs editing such as insertion / deletion of a character string, and at that time, identifies half-width characters and full-width characters.

The character processing flow will be described with reference to FIG. 4. When the identification operation starts, one byte is extracted from the character string (step 40), and it is determined whether the value of the one byte is smaller than (AO) ₁₆ (step 41). . If the result of this determination is YES, the one byte is identified as a half-width character (step 4).
2) If it is determined as NO, it is identified as a full-width character including the one byte determined and the next byte of the character string (step 43). The identification result is used in the editing process. As described above, since only one byte is determined, high-speed execution is performed.

When the data is stored in the storage device 32 when the editing is completed, the data amount is reduced by storing the data using the system code, compared with the case where the control code is used. When displaying Japanese characters on the display device 35 using the JIS standard code or on the printing device 36 or outputting the characters by printing, the data processing unit 33 in the restoration processing unit 34 and the system code extracted from the storage device 32 Is restored (converted) into a JIS standard code and output to the display device 35 or the printing device 36.

FIG. 5 is a diagram showing the difference between the processing of the present invention and that of the conventional example.

FIG. 5a shows the processing according to the present invention, and is performed from the fourth digit (the fourth byte) to the second digit for the character string "A full-width one-byte sentence A" in which half-width characters and full-width characters are mixed. When deleting a minute (one half-width character counts for one digit and one full-width character counts for two digits), when the deletion digit and end digit are the lower byte and upper byte of the full-width character, respectively, It must be deleted including the next digit. Therefore, although a half-width character or a full-width character is always identified, the identification method of the present invention enables high-speed identification processing.

Further, after deletion, the character string located before the deleted character ("all A" in the figure) must be combined with the character string located after ("a" in the figure). In the code system described above, it is only necessary to move the character string behind by the number of deleted digits (three digits in the figure) to the front, and the combining process is easy.

FIG. 5B shows an example in which the same deletion processing is executed by a conventional method using a control code.

Conventionally, when a control code is used, it is necessary to determine whether the current character is a half-width character or a full-width character by referring to the configuration of a separately provided full-width character mode flag (a flip-flop. The mode flag is turned on when the full-width start control code appears, and turned off when the full-width end control code appears.Also, in the process of combining the character strings after deletion, the character immediately before and after the character to be deleted (the character ( In the example of the figure, “full” and “sentence” are compared, and if both are full-width characters, unnecessary control codes existing between them (the full-width end control code after “all” in the example of the figure) are deleted. And other complicated processes are required.

As described above, according to the present invention, complicated processing required in the conventional example is unnecessary, and high-speed processing can be realized.

[Effects of the Invention] According to the present invention, while handling a wide variety of character types in which extended characters are added to JIS standard full-width characters, not only can half-width characters and full-width characters be easily identified, but also control codes can be used. Since it is not used, even when processing a character string in which half-width characters and full-width characters are frequently switched, the character length of the displayed / printed characters always matches the data length without increasing the data amount. As a result, it is possible to save memory resources and improve the Japanese processing performance.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of the present invention, FIG. 2 is a diagram illustrating the principle of the present invention, FIG. 3 is a configuration diagram of an embodiment of the present invention, FIG. 4 is a flowchart of character processing, and FIG. Fig. 6 shows the conventional JIS encoding system, Fig. 7 shows the conventional half-width character encoding system, and Fig. 8 shows another conventional encoding system. FIG. 9 is a diagram showing characters and character strings using control codes. In FIG. 1, 10: code generator 11: character processor 12: character identification means 31: conversion processor

Continuation of front page (72) Inventor Yoko Shiraishi 1-5-17 Dojima, Kita-ku, Osaka-shi, Osaka Kansai Panafacom Co., Ltd. (56) References JP-A-56-145425 (JP, A) JP-A-61- 141072 (JP, A)

Claims (1)

(57) [Claims] 1. A Japanese processing system having a conversion processing unit (31), wherein the conversion processing unit (31) has a code generation unit (10) and a character processing unit (11). ) Is JI expressed in 1 byte from the input device
Input a signal in which the half-width character code of S and the full-width character code of JIS expressed by 2-byte code are mixed. From the code of 1-byte half-width character, the numerical value represented by 8 bits of the code is equal to or less than the preset numerical value. A two-byte full-width character code is generated, and a two-byte full-width character code is used to generate a two-byte character code having a bit configuration in which the numerical value represented by the 8 bits of the upper byte takes a value larger than the predetermined value. The processing unit (11) receives the output signal of the code generation unit (10), determines a numerical value represented by one byte of the character code, and if the numerical value is less than a predetermined numerical value, identifies the one byte as a half-width character.
When the value is larger than a predetermined value, a two-byte combination of the byte and the succeeding byte is identified as a double-byte character.